* path.h (path_conv::set_name): Declare new function.

* path.cc (path_conv::set_name): Define new function.
* fhandler.h (fhandler_dev_null::open): Declare new function.
* fhandler.cc (fhandler_dev_null::open): Define new function.

winsup/cygwin/fhandler.h

@@ -951,6 +951,7 @@ class fhandler_dev_null: public fhandler_base
 {
  public:
   fhandler_dev_null ();
+  int open (int, mode_t);
 
   void dump ();
   select_record *select_read (select_record *s);